Climbing the lower slab section is the real crux. Some thin moves on small gear, then the crack opens back up and leads to a belay stance in the corner (mid to large gear), then up the chimney section up and exit right.
From the primary base area below Leaning Tower. Follow the trail up and left and then scramble through some ledges to the right until your below the main ramp of Leaning Tower. The route follows the the left facing corner all the way up the tower.
.5"-2" gear on the lower slab. Good Nuts. Take a fatty for the chimney section up top. A #4 Camalot is handy!
BETA PHOTO: Jordan following the second pitch of Leaning Tower...